关中东部新灌区小麦大面积增产技术的研究

从关中东部新灌区水资源缺乏的实际出发,在不断改善小麦生产基本条件的同时,通过引进和推广小偃6号,7852和小偃107等优良品种,建立单产3.0～4.5t/hm~2和4.5～6.0t/hm~2的节水群体结构,并采取田间麦糠(秆)复盖或中耕保墒等栽培技术,在灌溉1～2次、潜水总量为1275～1800m~3/hm~2的情况下,小麦单产可年均递增8％以上。

Yield Increasing Techniques for Wheat Over Large Area in Newly-Built Irrigation System in the East Part of Guanzhong

Based on the actual situation of deficit water resources in the newly-built irrigation system of the east part of Guanzhong and also through the improvement of wheat production basic conditions,such good wheat cultivars as Xiaoyan No. 6.7852 and Xiaoyan 107 were introduced and extended with the construction of water-saving structure of 3. 0~6. 0 t/hm2 per unit area wheat yield. In the case of adapting good techniques including wheat straw mulching or hoeing to preserve moisture for the top,per unit area wheat yield can increase by over 8% successively with one or two irrigations of total amount of water of 1 275-1 800 m3/hm2.